Appending New Material to the End of a Track
You can also append new material to the end of a track.
To append new material to the end of a track:
1. Do one of the following:

Click the Go to End button in the Transport to locate to the end of the track (this locates the end of the project).

Tab to the end point of the last clip on the track.
2. From there, begin recording.
Pro Tools | First adds the new material to the end of the track. If using Destructive Record mode, the new audio is appended to the audio file and clip from the first take. In Nondestructive Record mode, a new file and clip are created.